A method call is thus considered to be a request to an object to perform some task.

So rather than thinking 'a procedure is just a sequence of commands', a programmer using an object-oriented language will consider a method to be 'an object's way of providing a serviceвЂњ. The difference between procedures in general and an object's method is that the method, being associated with a particular object, may access or modify the data private to that object in a way consistent with the intended behavior of the object. This method explicitly frees the memory and resources used during its execution. A class may also define private methods who are only visible from the internal perspective of the object.Дestructor: When an object goes out of scope, or is explicitly destroyed, its destructor is called by the run-time system. Service-providing: A class exposes some вЂњservice-providingвЂќ methods to the exterior, who are allowing other objects to use the objectвЂ™s functionalities. Since an objectвЂ™s state should be as hidden as possible, accessors and mutators are made available or not depending on the information hiding involved and defined at the class level Mutator methods are used to explicitly change the value of a particular attribute of an object. Retrieval and modification of state: accessor methods are used to access the value of a particular attribute of an object. Constructors are called automatically by the run-time system whenever an object declaration is encountered in the code. The object-oriented programming paradigm intentionally favors the use of methods for each and every means of access and change to the underlying data:Д¬onstructors: Creation and initialization of the state of an object. Instance methods are associated with an objectД¬lass or static methods are associated with a class. In many object-oriented programming languages, however, the attributes may be accessible, though it is generally considered bad design to make data members of a class as externally visible. In pure object-oriented programming, the attributes of an object are local and cannot be seen from the outside.

As such, it represents an abstract data type.

In the case of a regular field (also called instance variable), for each instance of the object there is an instance variable.ДЄ static field (also called class variable) is one variable, which is shared by all instances.ДЄttributes are an objectвЂ™s variables that, upon being given values at instantiation (using a constructor) and further execution, will represent the state of the object.ДЄ class is in fact a data structure that may contain different fields, which is defined to contain the procedures that act upon it. An attribute, also called data member or member variable, is the data encapsulated within a class or object.

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